Ips lcd device having a light shielding layer under at least one common or data electrodes so that light transmittance areas of the common and data electrodes are the same and a method of manufacturing the same

An in-plane switching liquid crystal display device, comprising:

• first and second substrates;
• a plurality of pixel areas on said first substrate;
• data electrodes and common electrodes alternately formed in each of said pixel areas and patterned, wherein a light shielding layer is formed under at least one of said data electrodes, wherein a number of data electrodes having no light shielding layer thereunder is equal to a number of common electrodes having no light shielding layer thereunder so that the data electrodes and common electrodes have a same light transmitting area according to an applied voltage;
• and
• a liquid crystal layer between said first an second substrates.

A method of manufacturing an in-plane switching liquid crystal display device comprising:

• preparing first and second substrates;
• forming a plurality of gate lines and data lines on the first substrate to define a plurality of pixel areas;
• forming an insulation film over a surface of the pixel areas including the gate lines;
• forming light shielding layers having a predetermined width on the insulation film;
• forming a plurality of data electrodes and common electrodes having an alternating pattern in each of the pixel areas, wherein at least one of the light shielding layers is formed under at least one of the data electrodes so that the plurality of data electrodes and common electrodes have a same light transmitting area;
• and
• forming a liquid crystal layer between the first and second substrates.